Magento – How to instantiate the helper class in the phtml in Magento2

magento2

In my Module, i just have a Block.

I am not using any Controller in my custom module.

In my phtml template i need to call helper class like below, We used to call in Magento1.

  $params =$this->getRequest()->getParams();  
  $helper = Mage::helper("My Helper class");  //Here how to instantiate the helper in my phtml
  $filters = $helper->getmydata();
  $res = $helper->getSearchData();

How can i use helper in phtml in Magento2.

Best Answer

We can call helper class in template file like

$_helper = $this->helper('Magento\Catalog\Helper\Output');

use $_helper object to call helper method.

Related Solutions

Magento – Magento 2 : How to call helper function on override block

You can call helper function by define helper class into construct method of class,

You can declare your helper classs in construct method like this,

 \Vendor\Mymodule\Helper\Data $dataHelper

And

 $this->dataHelper = $dataHelper;

Now you can call any functio of Data.php helper function like this,

$this->dataHelper->getFunction() and your function is working.

namespace Vendor\Module_Name\Block\Product;
 class ListProduct extends \Magento\Catalog\Block\Product\ListProduct
 {
 public function __construct(
        \Magento\Catalog\Block\Product\Context $context,        
        \Magento\Framework\Data\Helper\PostHelper $postDataHelper,
        \Magento\Catalog\Model\Layer\Resolver $layerResolver,
        \Magento\Catalog\Api\CategoryRepositoryInterface $categoryRepository,
        \Magento\Framework\Url\Helper\Data $urlHelper,
        \Vendor\Mymodule\Helper\Data $dataHelper,
        array $data = []
    ) {
        $this->dataHelper = $dataHelper;       
        parent::__construct(
            $context,
            $postDataHelper,
            $layerResolver,
            $categoryRepository,
            $urlHelper,
            $data
        );
    }

   public function test(){
        $this->dataHelper->getHelperFunction();
   }
}

Remove var folder and check

Magento 2 – How to Call Helper Function on Override Product List Block

you can call your helper function as per below,

 namespace Vendor\Module_Name\Block\Product;
     class ListProduct extends \Magento\Catalog\Block\Product\ListProduct
     {
           public function __construct(
            \Magento\Catalog\Block\Product\Context $context,        
            \Magento\Framework\Data\Helper\PostHelper $postDataHelper,
            \Magento\Catalog\Model\Layer\Resolver $layerResolver,
            \Magento\Catalog\Api\CategoryRepositoryInterface $categoryRepository,
            \Magento\Framework\Url\Helper\Data $urlHelper,
            \Vendor\Mymodule\Helper\Data $dataHelper,
            array $data = []
        ) {
            $this->dataHelper = $dataHelper;       
            parent::__construct(
                $context,
                $postDataHelper,
                $layerResolver,
                $categoryRepository,
                $urlHelper,
                $data
            );
        }

       public function test(){
            $this->dataHelper->getHelperFunction();
       }
    }

Remove var folder and refresh again.

Best Answer

Related Solutions

Magento – Magento 2 : How to call helper function on override block

Magento 2 – How to Call Helper Function on Override Product List Block

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